clash
noun
a loud resonant repeating noise
“he could hear the clang of distant bells”
a state of conflict between persons
Synonymsfrictiona state of conflict between colors
“her dress was a disturbing clash of colors”
a minor short-term fight
verb
crash together with violent impact
“The cars collided”
“Two meteors clashed”
Synonymscollidebe incompatible; be or come into conflict
“These colors clash”
disagree violently
“We clashed over the new farm policies”
Source: WordNet 3.1, Princeton University